142Furthermore, it must be pointed out that, in an action for annulment under Article 230 EC, the legality of a Community measure must be assessed on the basis of the elements of fact and of law existing at the time when the measure was adopted. In particular, complex assessments made by the Commission must be examined solely on the basis of the information available to it at the time when those assessments were made (Salomon v Commission, cited in paragraph 138 above, paragraph 48, and Kneissl Dachstein v Commission, cited in paragraph 138 above, paragraph 47).